module.exports = function (db, callback) {
  // 用户模型
  db.define("GoodAttributeModel", {
    id: { type: 'serial', key: true },
    goods_id: Number,
    attr_id: Number,
    attr_value: String,
    add_price: Number
  }, {
    table: "sp_goods_attr"
  });
  return callback();
}